SKU: 72043265182

Hydrophobic carbon quantum dot powder

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Description

Hydrophobic carbon quantum dot powderProduct Name NameHydrophobic carbon quantum dot dispersion Product Overview Carbon quantum dotsCQDs are quasi spherical amorphous carbon nanocrystals composed of sp2 and sp3 cluster carbon structures, surrounded by abundant oxygen containing functional groups such as hydroxyl, carbonyl, carboxyl, etc. Their main constituent elements are C, H, O, and N. The luminescence mechanism of CQDs can be mainly attributed to these three types: quantum

Product Name

 

Name:Hydrophobic carbon quantum dot dispersion

 

Product Overview

Carbon quantum dotsCQDs are quasi spherical amorphous carbon nanocrystals composed of sp2 and sp3 cluster carbon structures, surrounded by abundant oxygen-containing functional groups such as hydroxyl, carbonyl, carboxyl, etc. Their main constituent elements are C, H, O, and N. The luminescence mechanism of CQDs can be mainly attributed to these three types: quantum confinement effect, surface state luminescence, and molecular state luminescence. Carbon quantum dots are composed of C=C and C-C bond cores that are prone to π→π * transitions, as well as various organic molecular functional groups distributed on the surface that are prone to n →π * transitions. The structure and composition of carbon quantum dots result in strong absorption of short wavelength light waves in the ultraviolet range (260-320 nm), accompanied by low-intensity absorption of visible light (400-710 nm).

The preparation methods of carbon quantum dots are divided into top-down method and top-down method. The top-down method is to cut large-sized carbon structural materials through physical or chemical methods, mainly including arc discharge, laser ablation, ultrasonic treatment, and chemical oxidation. The bottom-up approach is to aggregate small molecule precursors into large-sized CQDs through chemical reactions, mainly including water/solvothermal, template method, microwave-assisted, and solid-phase methods.

Hydrophobic carbon quantum dots are a special type of carbon quantum dot. Compared with common hydrophilic carbon quantum dots, their surface chemical groups or modifications make them less soluble in aqueous phase, while they have better solubility in non-polar or weakly polar organic solvents. More suitable for dispersion and application in non-polar solvents such as DMF, toluene, n-hexane, chloroform, etc.


Technical Parameter

 

Granularity:5-10 nm

Luminous color:Red fluorescence, Yellow-green fluorescence, Pink fluorescence

Status:Brownish liquid

Concentration:0.1 mg/mL:.5 mg/mL: mg/mL

Solvent:Ethanol,DMF,NMP

 

Product Features

 

Surface characteristics: The functional groups on the surface are mainly hydrophobic, such as long-chain alkyl groups, aromatic rings, etc., which make them difficult to disperse in aqueous phase, but have good solubility in non-polar organic solvents.

Optical properties: It has unique light absorption and emission characteristics, and its fluorescence emission wavelength may vary due to different preparation methods and surface modifications. Compared to hydrophilic carbon quantum dots, their optical properties may be relatively insensitive to changes in environmental polarity.

Stability: Due to the presence of hydrophobic groups on the surface, it may have better chemical and thermal stability in some organic solvents.


Application Fields

 

 

Organic light-emitting diode (OLED): As a material for the light-emitting layer, its hydrophobicity helps to better integrate with other organic layers, improving the device's luminous efficiency and lifespan. For example, in multi-layer structured OLEDs, hydrophobic carbon quantum dots can improve charge and energy transfer processes, thereby enhancing luminescence performance.

Organic photovoltaic devices: used to improve the light absorption and charge separation efficiency of photovoltaic materials. For example, incorporating it into organic semiconductors to improve their photoelectric conversion performance.

Organic catalysis: can participate in organic reactions as a catalyst or co catalyst. For example, in some hydrogenation reactions, hydrophobic carbon quantum dots can promote the progress of the reaction and improve selectivity.

Biomedical applications: Although hydrophobicity limits its direct in vivo application, it can be used to construct nanocarriers with specific functions. For example, by combining with hydrophobic drugs, drug encapsulation and controlled release can be achieved.

Sensor: used to detect specific substances in organic solvents. For example, detecting the concentration of organic pollutants or chemicals in non-aqueous systems.


Related Information

Please e-mail for the detailed characterization data.

E-mail:[email protected]

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SKU: 72043265182

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Mark Campbell
Waukegan, US
★★★★★ 4
Nice scale
Color: Black
Works as expected, nice size. Makes a big difference when adjusting espresso extraction. I haven't used the timer. One improvement for my use would be to move the power switch from the back to the front, on the side or on the control panel.
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Reviewed in the United States on May 5, 2026
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Jerry McCamman
Phoenix, US
★★★★★ 5
accurate scale
Color: Black
great product
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Reviewed in the United States on June 1, 2026
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Peter Merritt
New York, US
★★★★★ 5
Best Mid Priced Scale on the Market!
Color: Black, Color: Black
Hand down the best prices scale for the price. Excellent ability to precisely dial in pour overs. I’ve been waiting a long time for a scale like this to hit this price point.
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Reviewed in the United States on May 16, 2026
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amazon user
Chelsea, US
★★★★★ 5
Good
Color: Black
This food scale is accurate, easy to use, and very helpful for cooking and baking.
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Reviewed in the United States on May 13, 2026
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Jason C
Chelsea, US
★★★★★ 5
4.95 stars
Color: Black
TLDR: Buy it. It works well, it has impressive and useful features, it looks great, it’s thin/low-profile, and it’s a great price. Detailed review: I’m very happy with this scale, and it has certainly upped my espresso game by leaps and bounds. I’m able to weigh my beans very precisely down to a tenth of a gram (roughly the weight of a single bean), so my dosing is on point. Also, it fits beneath the portafilter with room to spare for my cup, so I can weigh my shots and accurately measure my input/output ratio. And automatic mode is magic! When the espresso hits the cup, the timer starts running, so I can measure flow rate along with everything else! Overall, super easy to use and very necessary for the at-home barista. One caveat: It acted weird on the 2nd or 3rd day, and I thought I was going to have to return it. The weight would slowly creep up even though I wasn’t adding any coffee. I dusted it off, made sure it was dry, set it on a more stable surface… I still don’t know what the matter was, but it stopped freaking out and it hasn’t really given me any trouble since. Also, I should mention that the automatic function doesn’t always work 100% perfectly; it works, and usually works quite well, but depending on the flow rate, you might get some drops dribbling into the cup and the timer not detect it right away. (I think the timer must be activated according to some sort of algorithm that looks for a certain increase in a certain amount of time, so a slower initial drip rate might not trigger it at first.) Also weirdly, it seems like about half of the time when the weight stops increasing (i.e., espresso stops flowing) , the timer pauses (as I think it’s supposed to do), but other times, the timer keeps running until you manually stop it. I don’t know… It’s a weird glitch, I guess, but it doesn’t really make any difference. The weight is accurate, and that’s the primary thing to keep an eye on. So, is it perfect? No, I guess not. But, it works extremely well and functions perfectly for my purposes. In fact, it’s a lot nicer and fancier than I expected – plus, it’s more affordable and more streamlined than its obvious rival the Acacia.
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Reviewed in the United States on June 1, 2024

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